Explanation:

Vitamin B are a class of water-soluble vitamins that play important roles in cell metabolism. Though these vitamins share similar names, they are chemically distinct compounds that often coexist in the same foods. In general, dietary supplements containing all eight are referred to as a vitamin B complex. They are also found in small quantities in whole unprocessed carbohydrate based foods. Processed carbohydrates such as sugar and white flour tend to have lower B vitamin than their unprocessed counterparts.